ATLAS CERPLAST - 25kg
What is ATLAS CERPLAST?
ATLAS CERPLAST is a ready-to-use priming mass containing quartz aggregate, formulated as a contact layer and adhesion promoter for mineral, acrylic, mosaic, and synthetic thin-coat renders. It is engineered for internal and external wall insulation (EWI / ETICS) systems to regulate substrate absorbency, increase mechanical grip, and prevent substrate show-through.
Manufacturer: ATLAS Group
Product Type: Quartz-filled render primer / Priming mass (Podkładowa masa tynkarska)
Primary Function: Adhesion bridge, suction regulator, and color base for thin-coat decorative renders
Base Material: Polymer dispersion with quartz aggregate filler
Packaging: Ready-to-use plastic buckets (typically 25 kg)
Key Technical Specifications & Metrics
| Parameter | Specification / Value |
| Physical State | Viscous liquid paste (ready mixed) |
| Density | Approx. 1.5 g/cm³ |
| Application Temperature | +5°C to +30°C (substrate and ambient) |
| Drying Time | 4 to 6 hours before render application (at 20°C, 55% RH) |
| Average Coverage / Consumption | 0.25 – 0.35 kg/m² (approx. 3.0 – 4.0 m²/kg) |
| Application Method | Brush, sheepskin roller, or mechanical spray |
| Permeability | High vapor permeability ($S_d \le 0.14\text{ m}$) |
| Color Variants | White, and tintable to match topcoat renders (e.g., Clinker, Sand, Grey) |
Substrate Compatibility & Application Scope
External Wall Insulation (EWI / ETICS): Applied directly over basecoats embedded with fibreglass mesh (e.g., ATLAS STOPTER K-20, ATLAS HOTER U).
Mineral Substrates: Concrete, aerated concrete, traditional cement, cement-lime renders, and gypsum plasters.
Drywall & Boards: Plasterboard, cement-bonded particleboards, and gypsum-fibre boards.
Topcoat Compatibility: Compatible with ATLAS mineral renders (Cermit), acrylic renders, mosaic renders (Deko M), and compatible silicone/silicate-silicone formulations.